On 06/03/18 01:57, Rob Herring wrote:
On Thu, Mar 01, 2018 at 10:51:38AM +0100, Amelie Delaunay wrote:
On some boards, especially when vbus supply requires large current,
and the charge pump on the PHY isn't enough, an external vbus power switch
per port may be used.
Add portN_vbus-supply property to usb-ehci bindings. As the number of ports
depends on the ehci controller, and the port on which an external vbus
supply depends on the platform, <portN> is used to make it generic.
Signed-off-by: Amelie Delaunay <amelie.delau...@st.com>
---
Documentation/devicetree/bindings/usb/usb-ehci.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/usb/usb-ehci.txt
b/Documentation/devicetree/bindings/usb/usb-ehci.txt
index 3efde12..cd576db 100644
--- a/Documentation/devicetree/bindings/usb/usb-ehci.txt
+++ b/Documentation/devicetree/bindings/usb/usb-ehci.txt
@@ -19,6 +19,7 @@ Optional properties:
- phys : phandle + phy specifier pair
- phy-names : "usb"
- resets : phandle + reset specifier pair
+ - portN_vbus-supply : phandle of regulator supplying vbus for port N
Just make this an array with the index being the port (and drop
"portN_").
Does that still work if there is an external supply for port 1 but none
for port 0? I believe that was brought up as a possibility before.
Robin.
